Troubleshooting - Yamaha YFM50S Service Manual

EBS01065

TROUBLESHOOTING

The battery is not being charged.
Check:
1. main fuse
2. battery
3. charging voltage
4. charging coil resistance
5. wiring connections
(of the entire charging system)
NOTE:
_
• Before troubleshooting, remove the following
part(s):
1. seat
2. rear fender
• Troubleshoot with the following special
tool(s).
Inductive self-powered tachome-
ter
P/N. YU-8036-B
Engine tachometer
P/N. 90890-03113
Pocket tester
P/N. YU-03112-C, 90890-03112
CHARGING SYSTEM
EBS01043
1. Main fuse
• Check the main fuse for continuity.
Refer to "CHECKING THE FUSE" in chap-
ter 3.
• Is the main fuse OK?
YES
EBS01044
2. Battery
• Check the condition of the battery.
Refer to "CHECKING AND CHARGING
THE BATTERY" in chapter 3.
Specific gravity
1.280 at 20 °C (68 °F)
• Is the battery OK?
YES
8 - 22
– +
ELEC
NO
Replace the fuse.
NO
• Refill battery fluid.
• Clean the battery
terminals.
• Recharge or
replace the battery.